Rocky Road Mousse Cheesecake

1 - 9"    chocolate crumb pie crust
1 pkg. (102g)   chocolate mousse
1/2 cup    cold milk
250g     cream cheese, softened
1 cup     miniature marshmallows
1/4 cup     coarsely chopped, toasted almonds
1 square     semi-sweet chocolate
1/2 tsp.     shortening
 

Serves 6 - 8